<template>
  <!-- 用户导入对话框 -->
  <el-dialog :close-on-click-modal="false" :title="title" width="400px" :visible.sync="open" @close="cancel" append-to-body>
    <el-upload
      v-show="true"
      ref="upload"
      :limit="1"
      accept=".xlsx,.xls"
      :headers="headers"
      :action="url + '?updateSupport=' + updateSupport"
      :disabled="isUploading"
      :on-progress="handleFileUploadProgress"
      :on-success="handleFileSuccess"
      :auto-upload="false"
      drag>
      <i class="el-icon-upload"></i>
      <div class="el-upload__text">
        将文件拖到此处，或
        <em>点击上传</em>
      </div>
      <div class="el-upload__tip" slot="tip">
        <el-checkbox v-model="updateSupport"/>
        是否更新已经存在的用户数据
        <el-link type="info" style="font-size:12px" @click="importTemplate">下载模板</el-link>
      </div>
      <div class="el-upload__tip" style="color:red" slot="tip">提示：仅允许导入“xls”或“xlsx”格式文件！</div>
    </el-upload>
    <div slot="footer" class="dialog-footer">
      <el-button type="primary" @click="submitFileForm">确 定</el-button>
      <el-button @click="cancel">取 消</el-button>
    </div>
  </el-dialog>
</template>

<script>
  import {
    importTemplate
  } from '@/api/system/user'
  import { getToken } from '@/utils/auth'
  import '@riophae/vue-treeselect/dist/vue-treeselect.css'
  export default {
    name: 'upload',
    data() {
      return {
        open:false,
        // 是否显示弹出层（用户导入）
        // 弹出层标题（用户导入）
        title: '',
        // 是否禁用上传
        isUploading: false,
        // 是否更新已经存在的用户数据
        updateSupport: 0,
        // 设置上传的请求头部
        headers: { Authorization: 'Bearer ' + getToken() },
        // 上传的地址
        url: process.env.VUE_APP_BASE_API + '/system/user/importData'
      }
    },
    methods: {
      // 文件上传中处理
      handleFileUploadProgress(event, file, fileList) {
        this.isUploading = true
      },
      // 文件上传成功处理
      handleFileSuccess(response, file, fileList) {
        this.cancel()
        this.isUploading = false
        this.$refs.upload.clearFiles()
        this.$alert(response.msg, '导入结果', { dangerouslyUseHTMLString: true })
        this.$parent.getList()
      },
      // 提交上传文件
      submitFileForm() {
        this.$refs.upload.submit()
      },
      /** 下载模板操作 */
      importTemplate() {
        importTemplate().then(response => {
          this.download(response.msg)
        })
      },
      cancel() {
        this.open = false;
        this.$emit('on-close')
      }
    },
    created() {
    }
  }
</script>
